SafeLocalMemHandle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CompMod / Microsoft / Win32 / SafeHandles / SafeLocalMemHandle.cs / 1305376 / SafeLocalMemHandle.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SafeLocalMemHandle 
**
** Author: David Gutierrez ([....])  
**
** A wrapper for handle to local memory
**
** Date:  July 8, 2002 
**
===========================================================*/ 
 
using System;
using System.Security; 
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using Microsoft.Win32; 
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution; 
using System.Runtime.Versioning; 

namespace Microsoft.Win32.SafeHandles { 
    [HostProtectionAttribute(MayLeakOnAbort = true)]
    [SuppressUnmanagedCodeSecurityAttribute]
    internal sealed class SafeLocalMemHandle : SafeHandleZeroOrMinusOneIsInvalid
    { 
        internal SafeLocalMemHandle() : base(true) {}
 
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode=true)] 
        internal SafeLocalMemHandle(IntPtr existingHandle, bool ownsHandle) : base(ownsHandle) {
            SetHandle(existingHandle); 
        }


        [DllImport(ExternDll.Advapi32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError=true, BestFitMapping=false)] 
        [ResourceExposure(ResourceScope.None)]
        internal static extern unsafe bool ConvertStringSecurityDescriptorToSecurityDescriptor(string StringSecurityDescriptor, int StringSDRevision, out SafeLocalMemHandle pSecurityDescriptor, IntPtr SecurityDescriptorSize); 
 
        [DllImport(ExternDll.Kernel32)]
        [ResourceExposure(ResourceScope.None)] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        private static extern IntPtr LocalFree(IntPtr hMem);

        override protected bool ReleaseHandle() 
        {
            return LocalFree(handle) == IntPtr.Zero; 
        } 

    } 
}


 

 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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